An individual is insured to drive a particular car (which should the car which they use primarily) as per the terms of your policy, perhaps there is an extra provision allowing you to drive other cars but that would be unique to each policy.
JohnJoe the type of insurance you have be it TFT or comprehensive does not determine whether or not you can drive other car, you have to look at the exact policy terms
JohnJoe the type of insurance you have be it TFT or comprehensive does not determine whether or not you can drive other car, you have to look at the exact policy terms